Lumber-loading device.



. N0.`46,a|s. Paten-red Apr. s, 1900.

o. ENGER. LUMBEB LUADING DEVICE.

(Application led Sept. 14, 1899.)

(No Model.)

UNITED STATES 'PATENT OFFICE.

oLUF ENGEa, or CHIPPEWA rALLs'wIsooNsiN.

LUMBER-LOADING DEVICE.

SPECIFICATION forming part of Letters Patent 110.6462816, usted April greco;

I i Application filed September 14, 1899. Serial No. 730,443. No model.)

TQ al 1071.011 izimcty concern."

Be it known that I, OLUF ENGER, a citizen of the United States, residing at Chippewa Falls, in the county of Chippewa and State of Wisconsin, have invented a new and useful- Lumber-Loading Device, of whichthe following is a specification.

This invention relates to lumber `jacks or pilers particularly adapted for loading cars at either the side or end from a wagon or pile adjacent the car, the objectsbeing toprovide l will be hereinafter claimed, the preferred embodiment of the apparatus being illustrated in the accompanying drawings, wherein- Figurefl is a perspective view of a jack embodying the features@l of the invention and shown applied in operative position. Fig. 2 is an elevation of thefimproved device partially 'brokenaway to illustrate the arrangement of Fig. 3 isa detailperspective viewof' parts. e a bridge includedin the apparatus. Fig. 4 is a sectional elevation of a part of the roller and one of its bearings, showing the manner' of supporting said roller.

Similar numerals of reference are employed to indicate corresponding parts inthe sex eral views.

The numeral 1 designates the stock or rollersupport, 'and 2 the roller, which is adjustable lengthwise. of' the said stock or support and also angularlythereto in ldifferent directions,

as-will be presently set forth. The stock 1, as more. clearly shown by Fig. 2, preferably consists of a tube 3,'having against one end a nut or bushing 4, which i's'threaded to receive a tubular screw 5,the,threads on the said s crew only extending partially over the-longitudinal distance of the latter, and at the outer end said screw is provided with a head 6, hav.

ing a biting edge 7 The inner part of the said screw 6 is longitudinally slotted, as at 8, to receive aninwardly-extending limitingpin 9, which prevents rotation of the said screw and also regulates its outward and inward extent relatively to the tube 3. The clear end ofloosely extends through an opening 14'in the table 15 of a rotatably-adjustable bridge 16, having legs 1 7 with concaved recesses 18 in the terminals thereof. The walls of the recesses 18 are serrated or otherwise roughened to cause a irm bearing of the legs on the tube 3 and to holdrtirersupported parts' above the A bridge against slippingor displacement after a desired adjustment has been obtained. The bridge 16 may be adjusted around the tube v3 in 4order to bring the roller, hereinafter more particularly referred to, in dierent positions and operable at angles in this direction. The screw-stem 13 also extends dle or ffri 22 which is in convenient osition` o p a for quick operation in changing the angle of the roller 2. The said roller has pointed center pins 23 in its/opposite ends, as clearly shown by Fig. 4, which' are received in sockets 24, formed in the inner ends of center upwardly through an opening 19 in a yoke 20,

screws 25, bearing inthe arms 26 of the yoke f and havingouter heads 27, by means of which they may be adjusted to control the rotation of the roller 2 and also compensate for wear or permit a substitution of another roller of similar construction when one shall have become unt for further use.

In applying the device the jack 1 -is disposed as shown by Fig..1, and the opposite edges 7 and 10 aire caused to tirmly. engage Ibo the door-frame by adjusting the nut 4. in such Y Adirection as to feed the screw 5 outwardly from the tube 3. While vin this position the wrenchll may remain on the jack and be in convenient position for releasing the same at anytimedesired. Thenutlisthenloosened to permit the yoke 2() to be turned at an angle either across the jack or around the latter, and after the necessary adjustment has been acquired the said nut 21 is tightened up on the screws-tern 13 and the roller firmly held in its working position through the medium principally of the bridge 16. In addition to this adjustment the stock itself can be elevated or lowered, and the apparatus is also equally well adapted for unloading purposes and will have the same operation in either instance. By the use of the bridge 17 the strain of heavy timber is materially relieved from the yoke by the reinforce established Aby said bridge, and the screw-stem 13is also strengthened by the interposition of the bridge and less liable to break. By having the inner part of the screw 5 bearing within the tube 3 the said screw is strongly braced and the strain distributed over a greater surface. v A v Various changes in the form, proportion, and minor details of construction may be resorted to without departing fromthe principle or sacrificing any of the advantages ofthe invention.

Having thus described the invention, what is claimed as new is- 1. The combination of an adjustable support,aclampingband thereon having a screwstem, a bridge resting upon the support and through which the screw-stem passes, a yoke carrying a rollerand also having the screwsteln extending freely therethrough and a clamping-nut for the said stem.

2. In a lumber-jack, the combination with an adjustable support, of a yoke carrying a roller, a bridge having a rotatable adjustment on the support and against which the yoke has bearing, aud means for clamping the yoke in fixed position on the bridge.

3. In a lumber-jack, the combination with an adjustable support, of a yoke carrying a roller, a bridge having serrated legs bearing against the support and interposed between the latter and the said yoke and means for holding the yoke against the bridge.

4. In a lumber-jack, the combination with an adjustable support, of a roller-holding device, a bridge interposed between the rollerholding device and the support, a clampingband having a screw-stem extending through] the bridge and yoke and means for engaging the said screw-stem for securing the rollerholding device and bridge on the support.

5. In a lumber-jack, the combination with an adjustable support and a roller, of a-rotatably-adjustable. bridge interposed'between the roller-holding'device and the support, and means for sustaining the several parts.

6. In a lumber-jack, the combination lwith an adjustable support and a roller, of a bridge interposed between the roller-holding device and the support and having legs formed with recesses provided with roughened walls, and means for securing the several parts in adjusted position.

In testimony that I claim the foregoing as my own I have hereto a'txed my signature in the presence of two witnessesa OLUF ENGER.

Witnesses:

JOHN G. MONAT, FRANK GROUNDWATE'R. 

